MESON Chess Problem Database
Problem Display
PID: 54386 (1B6/2n2p1K/1n2NP2/p2N2P1/Qbr1kP1R/3R1p1B/2P5/8 w - - 0 1)
Kopyl, Valery Volodimirovich
StrateGems, 2004
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 1...Rc6
- 2.Rd4#
- 1...Be1
- 2.Sc5#
- 1...Bd2
- 2.Sc5#
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.Sc5#
- 1...Bc5
- 2.Sc3#
- 2.Sxc5#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sb5
- 2.f5#
- 1...Sa6
- 2.f5#
- 1...Sa8
- 2.f5#
- 1...Se8
- 2.f5#
- 1...Rxc2
- Tries
- 1.Sc3+?
- 1...Bxc3
- 2.Sc5#
- 1...Rxc3!
- 1...Bxc3
- 1.Se3?
- threat
- 2.Bf5#
- 1...f2
- 2.Bg2#
- 1...Rc5
- 2.Sxc5#
- 1...fxe6!
- threat
- 1.Sc5+?
- 1...Bxc5
- 2.Sc3#
- 1...Rxc5!
- 1...Bxc5
- 1.Bxc7?
- threat
- 2.f5#
- 1...Rxc2
- 2.Rd4#
- 1...Rxc7
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Be1
- 2.Sc5#
- 1...Bd2
- 2.Sc5#
- 1...Bd6
- 2.Sc3#
- 1...Sxd5!
- threat
- 1.Qe8?
- threat
- 2.Sc5#
- 1...Sxe6
- 2.f5#
- 1...Sxe8
- 2.f5#
- 1...fxe6
- 2.Qg6#
- 1...Rd4
- 2.Rxd4#
- 1...Rc5
- 2.Sxc5#
- 2.Sexc7#
- 2.Rd4#
- 1...Bc5
- 2.Sxc5#
- 1...Be7!
- threat
- 1.Qa1?
- threat
- 2.Qe5#
- 2.f5#
- 1...Rxc2
- 2.Rd4#
- 2.Qd4#
- 1...Sbxd5
- 2.Qe5#
- 1...Scxd5
- 2.Qe5#
- 1...Sxe6
- 2.Qe5#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Rc3
- 2.Rd4#
- 2.Qe1#
- 1...Be1
- 2.Qe5#
- 2.Qxe1#
- 1...Bd2
- 2.Qe5#
- 1...Bd6
- 2.Qe1#
- 1...Sd7
- 2.f5#
- 1...Bc3!
- threat
- 1.Qxb4?
- threat
- 2.Sc3#
- 2.Sc5#
- 2.Qe1#
- 1...Rxb4
- 2.Sc3#
- 2.Sc5#
- 1...Sbxd5
- 2.Sc5#
- 2.Qxc4#
- 1...Scxd5
- 2.Sc5#
- 1...Sxe6
- 2.Sc3#
- 2.Qe1#
- 1...fxe6
- 2.Sc3#
- 2.Qe1#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sa4
- 2.Qe1#
- 2.Qxc4#
- 1...Sd7
- 2.Sc3#
- 2.Qe1#
- 2.Qxc4#
- 1...Sb5
- 2.Sc5#
- 2.Qe1#
- 2.f5#
- 1...Sa6
- 2.Sc3#
- 2.Qe1#
- 2.f5#
- 1...f2
- 2.Sc3#
- 2.Sc5#
- 1...axb4!
- threat
- 1.Sc3+?
- Keys
- 1.Qc6!
- threat
- 2.Sc3#
- 2.Re3#
- 1...Rxc2
- 2.Re3#
- 2.Rd4#
- 1...Rxc6
- 2.Rd4#
- 1...Sbxd5
- 2.Qxc4#
- 1...Scxd5
- 2.f5#
- 1...Sxe6
- 2.Sc3#
- 1...fxe6
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Bd2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.Re3#
- 1...Bc5
- 2.Sc3#
- threat
- 1.Qc6!
There are these versions: 245926
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- R(c);N_GUARD,P_SPINB(b),XP(A)::R1(B)
- R(c);N_GUARD::R1(B),XR(c)
- R(c);N_GUARD,P_SPINB(b)::R1(B)
- B(b);N_GUARD,P_SPINR(c)::S(I)
- B(b);N_GUARD,P_SPINR(c)::S(G)
- S(g);::R(F)+P(E)
- Tries
- Try
- S(G);CHECK
- Vars
- B(b);P_SPINR(c),XS(G)::S(I)
- Refutation
- R(c);P_SPINB(b),XS(G)
- Try
- S(G);
- Threat
- B(C)
- Vars
- P(a);OGATEB::B(C)
- R(c);N_GUARD,P_SPINB(b)::S(I),XR(c)
- Refutation
- P(h);XS(I)
- Try
- S(I);CHECK
- Vars
- B(b);P_SPINR(c),XS(I)::S(G)
- Refutation
- R(c);P_SPINB(b),XS(I)
- Try
- B(L);XS(g)
- Threat
- R(F)+P(E)
- Vars
- R(c);N_GUARD,P_SPINB(b),XP(A)::R1(B)
- R(c);N_GUARD,P_SPINB(b),XB(L)::R1(B)
- R(c);N_GUARD::R1(B),XR(c)
- B(b);N_GUARD,P_SPINR(c)::S(I)
- B(b);N_GUARD,P_SPINR(c)::S(G)
- Refutation
- S(f);XS(G)
- Try
- Q(D);
- Threat
- QAR(D)+S(I),DCHECK
- Vars
- S(g);P_SPINS(g),XS(I)::R(F)+P(E)
- S(g);XQ(D)::R(F)+P(E)
- P(h);OGATE,P_SPINP(h),XS(I)::QAB(D)
- R(c);N_GUARD::R1(B),XR(c)
- B(b);::QAR(D)+S(I),DCHECK,XB(b)
- Refutation
- B(b);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(f);XS(G)::QAR1(D)
- S(g);XS(G)::QAR1(D)
- S(g);XS(I)::QAR1(D)
- B(b);::QAR1(D)
- B(b);N_GUARD::QAR(D)
- S(f);::R(F)+P(E)
- Refutation
- B(b);
- Try
- Q(D);P_PINR(c),XB(b)
- Threat
- DUALS(3)
- Vars
- S(g);XS(G)::S(I)
- Refutation
- P(e);N_SPINR(c),XQ(D)
- Try
- Actual
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XQ(D)::R1(B)
- S(f);N_GUARD,P_SPINS(f),XS(G)::QAR2(D),XR(c)
- S(g);P_SPINS(g),XS(G)::R(F)+P(E)
- S(g);XS(I)::QAB(D)+S(G),DCHECK
- P(h);XS(I)::QAB(D)+S(G),DCHECK
- B(b);::QAB(D)+S(G),DCHECK
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